All‑metal conical screw pump solutions are transforming artificial lift in thermal heavy oil fields where conventional PCPs quickly reach their limits. By combining elastomer‑free pump design with intelligent clearance control and automated wellhead sealing, these solutions help operators extend run life, improve Oil‑Steam Ratio (OSR), and reduce total lifting and steam costs.

From Conventional PCPs to Intelligent Conical PCP Artificial Lift

Conventional progressive cavity pumps rely on elastomer stators that are highly sensitive to temperature, steam, and aggressive reservoir fluids. In CSS, SAGD, and other thermal recovery processes, elastomers tend to swell, harden, crack, and de‑bond, causing severe efficiency loss, torque spikes, and frequent pump failures.

The IntelliCPCP® Intelligent Conical PCP Artificial Lift System was created to break through these limitations. Featuring a revolutionary conical rotor‑stator geometry and an intelligent adjustment mechanism, IntelliCPCP® precisely controls the running clearance between rotor and stator to optimize performance, fundamentally resolving core challenges such as frequent pump sticking and premature failure.

This technology not only extends pump run life but also enhances well productivity and ultimate recovery, marking a complete evolution beyond conventional PCPs in thermal heavy oil applications.

Core of the Solution: FERROXIS™ All-Metal Conical PCP

At the heart of the all‑metal conical screw pump solution is the FERROXIS™ all‑metal conical PCP. This pump completely eliminates elastomers and leverages a patented conical geometry with precision surface hardening to form a dynamic metal‑to‑metal seal.

Key technical features include:

• Elastomer‑free construction: Both stator and rotor are metallic, removing the risk of elastomer degradation under high temperature and steam.

• Dynamic metal‑to‑metal seal: Conical geometry and advanced surface treatment create a seal that maintains high and consistent volumetric efficiency across thermal cycles.

• High‑temperature rating: FERROXIS™ operates reliably in wells with bottomhole temperatures (BHT) up to 380 °C and continues to function at surface ambient temperatures from −35 °C to 45 °C.

• Ultra‑heavy oil handling: The pump is capable of lifting ultra‑heavy crude with viscosities up to 20,000 mPa·s at 50 °C, even in high‑water‑cut or gas‑liquid mixtures.

These characteristics make the all‑metal conical PCP particularly suited for harsh thermal heavy oil reservoirs where conventional PCPs fail rapidly.

System-Level Design: IntelliCPCP® Artificial Lift Solution

An effective all‑metal conical screw pump solution goes beyond the pump itself and integrates surface, wellhead, and digital components. The IntelliCPCP® system from Wuxi Hengxin Beishi Technology Co., Ltd. (HXBS) is a comprehensive rod‑driven artificial lift system featuring the FERROXIS™ all‑metal conical PCP at its core.

The system is compatible with casing sizes of 5.5 in and larger and is capable of handling water, high‑water‑cut crude, gas‑liquid mixtures, and high‑viscosity fluids. It delivers a daily production rate of 10–70 m³/d, supports pump setting depths up to 1,500 m, and accommodates well deviations up to 80°.

Main System Components

HXBS integrates several proprietary subsystems into one coherent solution:

• Surface Drive Head: DynaRL™ Drive System The DynaRL™ Drive System decouples the bearing housing from the main drive motor and uses a liquid lubrication system for reliable operation from −40 °C to 60 °C. It transmits high torque while allowing precise axial movement of the sucker rod string, enabling sand flowback, steam injection, and dynamic efficiency optimization without compromising rotational stability.

• Balancing Assembly: Graspos™ with RodSavior™ The Graspos™ balancing assembly is fixed relative to the FERROXIS™ pump and coupled to the rotor via a precision adjustment rod. It isolates the rotor‑stator running clearance from axial and lateral forces caused by rod stretch and wellbore deviation, preventing buckling and interference‑induced sticking. Integrated RodSavior™ technology supports the dynamic weight of the rod string and fluid column while mitigating rod‑tubing wear, enabling deeper pump setting in highly deviated wells.

• Wellhead Cross Assembly with THERMOLOCK™ The Wellhead Cross Assembly serves as the central conduit for production and media injection and is fully API‑compliant. Its inverted‑taper THERMOLOCK™ sealing mechanism uses a metal‑to‑metal engagement actuated by the lifting assembly to guarantee secure, leak‑proof sealing during dynamic pumping and steam injection.

• Synergix™ Intelligent VSD and HXBS Monitor The Synergix™ Intelligent VSD cabinet features IP54 protection, high‑temperature operation up to 65 °C, and proprietary fault‑resolution algorithms for events such as pump sticking or unexpected shutdowns. The HXBS Monitor Intelligent Control Center provides real‑time, multi‑well data acquisition and analytics, enabling remote monitoring, parameter adjustment, and control across the IntelliCPCP® fleet.

Together, these elements turn the all‑metal conical screw pump into a fully integrated Intelligent Conical PCP Artificial Lift System for thermal heavy oil fields.

DAGS™ Dynamic Clearance Adjustment and Sand Handling

A defining advantage of the IntelliCPCP® solution is the DAGS™ Dynamic Clearance Adjustment System. This proprietary system works in three key ways:

• Volumetric Efficiency Optimization (DAGS™‑01) DAGS™‑01 adjusts the axial position of the conical rotor to precisely control rotor‑stator clearance and concentricity in real time. It minimizes energy losses linked to clearance mismatch and maintains high volumetric efficiency even as fluid viscosity and operating conditions change.

• Adaptive Axial Wear Compensation (DAGS™‑02) By continuously monitoring pump performance, DAGS™‑02 detects clearance enlargement caused by wear and automatically repositions the rotor when preset thresholds are reached. This extends the pump’s effective run life and keeps it operating near its optimal efficiency point.

• Dynamic Clearance Sand Handling System When abrasive solids threaten to cause sand bridging and sticking, the system dynamically increases running clearance to create flow channels that keep solids in suspension and flush them through the pump. This prevents catastrophic sand‑induced pump sticking and reduces the risk of hard starts.

For FERROXIS™, tighter clearance yields higher peak volumetric efficiency, while increased RPM raises total production output. The IntelliCPCP® system maximizes overall efficiency by precisely controlling both clearance and RPM based on real‑time well conditions.

Integrated Injection-Production & Wellhead Sealing

In thermal heavy oil, the ability to combine steam injection and production without pulling the tubing string is crucial to economics and OSR. The all‑metal conical screw pump solution from HXBS provides an Integrated Injection‑Production & Automated Wellhead Sealing System.

Using the surface lifting assembly and intelligent control algorithms, the system:

• Executes automated wellhead sealing via the THERMOLOCK™ mechanism, ensuring fail‑safe, leak‑proof performance for HPHT steam injection and production.

• Enables rigless steam injection and production in the same tubing string, avoiding costly workovers and minimizing downtime.

• Protects against fluid fallback and solid ingress with dedicated check valves and steam injection strainers, maintaining a clean flow path and pumping environment.

These features significantly improve thermal utilization, extend injection‑production cycles, and reduce steam injection costs per barrel of oil produced.

Field-Proven Performance and Operator Benefits

The IntelliCPCP® all‑metal conical screw pump solution has undergone rigorous market validation in heavy‑oil and high‑GOR wells. The system has achieved a maximum run life exceeding 50 months, establishing itself as a preferred artificial lift method for ultra‑heavy oil, high‑sand, and extreme high‑temperature environments.

Documented advantages for operators include:

• Extended run life through dynamic clearance adjustment and system efficiency compensation.

• Pump sticking prevention via automated sand and scale clearance functions.

• Superior wellhead integrity with highly automated THERMOLOCK™ sealing.

• Longer injection‑production cycles and improved OSR, significantly lowering steam injection costs.

• Reduced rod‑tubing wear in horizontal wells due to the Graspos™ balancing assembly and RodSavior™ system.

• Simplified maintenance with a streamlined, highly integrated drive mechanism.

• Lower startup torque, reduced to 51% of rated capacity, minimizing startup risks and mechanical stresses.

Application Domains for All-Metal Conical Screw Pump Solutions

IntelliCPCP® and the FERROXIS™ all‑metal conical PCP serve a wide range of challenging applications:

• Thermal Recovery: Steam‑Assisted Gravity Drainage (SAGD) and Nitrogen‑Assisted Cyclic Steam Stimulation (CSS).

• Conventional Wells and Ultra/Extra‑Heavy Oil Wells where high viscosity and solids require robust PCP performance.

• High‑Sand‑Producing Wells and corrosive or sour wells demanding strong materials and sand‑handling capability.

• Marginal and low‑rate wells needing efficient, low‑energy artificial lift solutions.

• High‑Angle and Horizontal Wells (HAHZ), where rod‑tubing wear and deviated profiles challenge conventional lift methods.

• Unconventional Wells including shale‑oil and CBM reservoirs.

For operators seeking a next‑generation artificial lift option in thermal heavy oil fields, HXBS offers a complete all‑metal conical screw pump solution through IntelliCPCP®, supported by end‑to‑end engineering, deployment, and lifecycle services. More information and case studies are available at https://www.hxbsglobal.com/en.